MODLD-582: Review/Sonar fixes

src/main/java/org/folio/linked/data/util/LccnUtils.java

@@ -0,0 +1,17 @@
+package org.folio.linked.data.util;
+
+import static org.apache.commons.collections4.CollectionUtils.isEmpty;
+
+import lombok.experimental.UtilityClass;
+import org.folio.linked.data.domain.dto.LccnRequest;
+
+@UtilityClass
+public class LccnUtils {
+
+  public static boolean isCurrent(LccnRequest lccnRequest) {
+    return isEmpty(lccnRequest.getStatus()) || lccnRequest.getStatus()
+      .stream()
+      .flatMap(status -> status.getLink().stream())
+      .anyMatch(link -> link.endsWith("current"));
+  }
+}

src/main/java/org/folio/linked/data/validation/dto/LccnPatternValidator.java

@@ -1,5 +1,7 @@
 package org.folio.linked.data.validation.dto;
 
+import static org.folio.linked.data.util.LccnUtils.isCurrent;
+
 import jakarta.validation.ConstraintValidatorContext;
 import java.util.regex.Pattern;
 import org.folio.linked.data.domain.dto.LccnRequest;

src/main/java/org/folio/linked/data/validation/dto/LccnUniquenessValidator.java

@@ -16,6 +16,7 @@
 import org.folio.linked.data.exception.RequestProcessingExceptionBuilder;
 import org.folio.linked.data.repo.FolioMetadataRepository;
 import org.folio.linked.data.service.search.InstanceSearchService;
+import org.folio.linked.data.util.LccnUtils;
 import org.folio.linked.data.validation.LccnUniqueConstraint;
 import org.springframework.stereotype.Component;
 
@@ -62,7 +63,7 @@ private SearchResponseTotalOnly findInstanceWithLccn(List<String> lccn, String i
   }
 
   private boolean hasCurrentLccn(InstanceField instance) {
-    return getLccnRequest(instance).anyMatch(this::isCurrent);
+    return getLccnRequest(instance).anyMatch(LccnUtils::isCurrent);
   }
 
   private List<String> getLccnValues(InstanceField instance) {

src/main/java/org/folio/linked/data/validation/dto/LccnValidator.java

@@ -1,17 +1,8 @@
 package org.folio.linked.data.validation.dto;
 
-import static org.apache.commons.collections4.CollectionUtils.isEmpty;
-
 import jakarta.validation.ConstraintValidator;
 import java.lang.annotation.Annotation;
-import org.folio.linked.data.domain.dto.LccnRequest;
 
 public abstract class LccnValidator<A extends Annotation, T> implements ConstraintValidator<A, T> {
 
-  protected boolean isCurrent(LccnRequest lccnRequest) {
-    return isEmpty(lccnRequest.getStatus()) || lccnRequest.getStatus()
-      .stream()
-      .flatMap(status -> status.getLink().stream())
-      .anyMatch(link -> link.endsWith("current"));
-  }
 }